Update PickupAsTrash description

_oak_mods/PickupAsTrash.md

@@ -1,3 +1,17 @@
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 pyproject_url: https://github.com/Siggless/oak-sdk-mods/raw/refs/heads/main/PickupAsTrash/pyproject.toml
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+
+Adds a secondary interaction to pickups, to pickup and mark as trash, and adds a "Sell All Trash" secondary interaction to weapon vendors in BL3.
+
+This is not a bindable mod key - it uses the game's "Secondary Use" bind, when looking at an item:
+
+![Item cards with Pickup As Trash interaction]({{ "/assets/mods/oak/pickup_as_trash/PickupAsTrash.jpg" | relative_url }})
+{:style="display: block; margin: 0 auto; width: 50%"}
+
+In BL3 the HUD prompt doesn't always show, because the HUD only shows max 2 prompts, but the interaction still works.
+
+BL3 vendor interaction:
+
+![Weapon vendor with Sell All Trash interaction]({{ "/assets/mods/oak/pickup_as_trash/PickupAsTrash_Vendor.jpg" | relative_url }})
+{:style="display: block; margin: 0 auto; width: 50%"}